CVE-2016-7796

NameCVE-2016-7796
DescriptionThe manager_dispatch_notify_fd function in systemd allows local users to cause a denial of service (system hang) via a zero-length message received over a notify socket, which causes an error to be returned and the notification handler to be disabled.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-659-1
NVD severitymedium (attack range: local)
Debian Bugs839607

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
systemd (PTS)jessie215-17+deb8u7fixed
jessie (security)215-17+deb8u8fixed
stretch232-25+deb9u6fixed
buster239-13fixed
sid239-15fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
systemdsource(unstable)231-9medium839607
systemdsourcejessie215-17+deb8u6medium
systemdsourcewheezy44-11+deb7u5mediumDLA-659-1

Notes

https://github.com/systemd/systemd/issues/4234#issuecomment-250441246
Fixed by: https://github.com/systemd/systemd/pull/4240

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